SM2DCU — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Sweden Most frequent locator attributed to this token: JP93

Receiver-side FT8 activity involving SM2DCU, decoded by SO8OO in southeastern Poland. 9 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 3 UTC dates in the available aggregate history. Observed between 2026-09-30 and 2026-10-20.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 9 FT8 messages attributed to SM2DCU as the transmitting token by decoded message structure across 3 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (56%), followed by 40 m (44%). In this small sample, the estimated median decoder S/N was -12 dB; no usual signal pattern is inferred.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-12 dB

Estimated median S/N

Bands

80m · 5 40m · 4

First attributed message: 2026-09-30
Last attributed message: 2026-10-20 04:58 UTC

Observed FT8 message patterns

Attributed sample: 9 messages
Active dates: 3 UTC dates
Estimated median S/N: -12 dB
S/N percentile sample: Too small
Recurring-pattern threshold: Not met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 4, moderate (-15 to -9 dB) 1, strong (≥ -8 dB) 4.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent. The sample does not meet the threshold for a recurring time or signal-pattern claim (20 attributed messages, three UTC dates and five distinct 15-minute windows).

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SM2DCU in decoded directed-looking exchanges:

HA7TM · Hungary YO9HP · Romania PA3FPQ · Netherlands R3ICU · European Russia SP4NDY · Poland

Most frequent locator attributed to SM2DCU

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator: JP93 · 2 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,517 km (approx.)
Last such locator decoded: 2026-10-01 21:11 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Time UTC	Band	SM2DCU S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-20 04:58	40m	-24 / -6	YO9HP	+8 / -7	3	✓ Full exchange observed
10-08 11:32	40m	- / -8	UA4FKT	-14 / -	2	Partial capture
10-01 21:17	80m	- / -	UA4FKT	-3 / -	2	Partial capture
10-01 21:16	80m	-8 / +6	R3ICU	-9 / -	4	✓ Closing observed
10-01 21:15	80m	- / -	SP4WJ	+1 / -	2	Partial capture
10-01 21:13	80m	- / -24	DK7ZT	+8 / -	2	Partial capture
10-01 21:12	80m	- / -	9A4ZM	+18 / -	2	Partial capture
10-01 21:11	80m	-6 / -17	PA3FPQ	+5 / -4	5	✓ Full exchange observed
10-01 21:11	80m	- / -9	SM2OTU	-20 / -	3	Partial capture
10-01 21:11	80m	- / -8	SP4NDY	+15 / -	5	✓ Closing fragment
09-30 16:42	40m	-16 / -3	ON5ACO	-12 / -7	2	Partial capture

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

40m

UTC    dB Audio  Message
164215 -16  343  CQ SM2DCU JP93
164230 -12 1334  SM2DCU ON5ACO -03
164315 -16  343  ON5ACO SM2DCU R-07
112730 -13 1152  SM2DCU UA4FKT LO23 (x3)
045800 -24 1632  HA7TM SM2DCU RR73
045815  +9 1189  SM2DCU YO9HP -06
045830 -24 1632  YO9HP SM2DCU R-07
045845  +8 1189  SM2DCU YO9HP RR73

80m

UTC    dB Audio  Message
211300 -21 2008  SM2DCU SM2OTU -09
211300 +18  639  SM2DCU 9A4ZM JN86
211330 +18 2692  SM2DCU SP4NDY R-08
211330 +10  643  SM2DCU DK7ZT -24
211400 +17 2693  SM2DCU SP4NDY 73
211400  +7  643  SM2DCU DK7ZT -24
211500  +0  643  SM2DCU SP4WJ KO03
211515  -6  643  DO8JB SM2DCU -12
211530  +2  643  SM2DCU SP4WJ KO03
211600  -9  737  SM2DCU R3ICU KO66 (x2)
211645  -8  643  R3ICU SM2DCU RR73
211700  -5  643  SM2DCU UA4FKT LO23
211700 -12  737  SM2DCU R3ICU 73
211730  -1  644  SM2DCU UA4FKT LO23

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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